gramora/gramora/Utilities/APIKeyObfuscator.swift

import Foundation

enum APIKeyObfuscator {
    private static let xorSeed: [UInt8] = Array("GramoraOpenAIKey.v1".utf8)

    private static let obfuscatedOpenAIKey: [UInt8] = [
        0x34, 0x19, 0x4C, 0x1E, 0x19, 0x11, 0x00, 0x2C, 0x13, 0x11, 0x43, 0x14, 0x7F, 0x0F, 0x10, 0x54,
        0x67, 0x4E, 0x40, 0x7E, 0x24, 0x1B, 0x1F, 0x28, 0x4B, 0x03, 0x26, 0x28, 0x36, 0x03, 0x07, 0x04,
        0x33, 0x32, 0x3C, 0x78, 0x38, 0x69, 0x3E, 0x2A, 0x08, 0x03, 0x20, 0x01, 0x2B, 0x17, 0x5D, 0x17,
        0x5A, 0x0E, 0x19, 0x26, 0x3A, 0x4F, 0x58, 0x1F, 0x00, 0x29, 0x20, 0x00, 0x25, 0x42, 0x28, 0x04,
        0x25, 0x03, 0x0B, 0x0C, 0x20, 0x0F, 0x20, 0x2E, 0x12, 0x7F, 0x26, 0x7D, 0x2B, 0x3A, 0x38, 0x0A,
        0x02, 0x45, 0x30, 0x16, 0x3A, 0x31, 0x5D, 0x03, 0x25, 0x29, 0x0E, 0x3F, 0x64, 0x41, 0x79, 0x23,
        0x07, 0x11, 0x21, 0x2E, 0x47, 0x59, 0x76, 0x1A, 0x2C, 0x56, 0x05, 0x0B, 0x3E, 0x04, 0x23, 0x54,
        0x18, 0x01, 0x00, 0x1E, 0x3E, 0x08, 0x2C, 0x1A, 0x19, 0x05, 0x22, 0x01, 0x2A, 0x70, 0x7A, 0x31,
        0x48, 0x41, 0x4C, 0x19, 0x65, 0x12, 0x34, 0x17, 0x5A, 0x2A, 0x2B, 0x02, 0x2A, 0x25, 0x0E, 0x5F,
        0x1E, 0x7C, 0x2E, 0x3A, 0x13, 0x78, 0x17, 0x5A, 0x6A, 0x3C, 0x23, 0x5D, 0x3C, 0x34, 0x18, 0x22,
        0x38, 0x55, 0x20, 0x10, 0x01, 0x7B, 0x24
    ]

    static func openAIAPIKey() -> String? {
        guard !xorSeed.isEmpty else { return nil }

        let decoded = obfuscatedOpenAIKey.enumerated().map { index, byte in
            byte ^ xorSeed[index % xorSeed.count]
        }

        guard let key = String(bytes: decoded, encoding: .utf8) else { return nil }

        let trimmed = key.trimmingCharacters(in: .whitespacesAndNewlines)
        return trimmed.isEmpty ? nil : trimmed
    }
}